The UK would probably be the easiest country to obtain a JAR License since it probably has the widest array of options in terms of training. It's the only EASA country that has approved FTOs outside the EU, for instance in the US. It's also the only EASA country that has exam centers on 3 different continents allowing you to sit your written exams in various places. Not sure if the previous points fall under your definition of "easy" but if I'd go through the UK CAA if I needed a JAR License
